山东省机械设计研究院与莱芜钢厂协作进行了蠕墨铸铁钢锭模的研制工作。蠕墨铸铁用该厂冲天炉熔炼,采用稀土锌铝镁合金作蠕化剂,所生产的锭模在炼钢车间四个锭盘上与灰铁锭模作了对比,浇注钢种大部份为合金结构钢、滚珠钢、其余为碳 Shandong Institute of Mechanical Design and Laiwu Steel Works in compacted graphite iron ingot mold development work. Compacted graphite cast iron cupola used in the plant smelting, the use of rare earth zinc-magnesium alloy as a vermiculite, the production of ingot mold in the steel plant four ingots with gray iron ingot mold made contrast, the majority of steel pouring is Alloy structural steel, ball steel, the rest is carbon